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The Atkinson Cycle
Conclusion
Variable valve timing are adding performance as well as functionality. We are going to see the more and better improvements
The History
Why we should care?
The Atkinson-cycle engine is a type of internal combustion engine invented by James Atkinson in 1882. The Atkinson cycle is designed to provide efficiency at the expense of power density, or total power extracted per unit of displacement per rotation. A modern variation of this approach is used in some modern automobile engines. While originally seen exclusively in hybrid electric applications such as the Toyota Prius, some non-hybrid automobiles now feature engines that can run in the Atkinson cycle as a part-time operating regimen, giving good economy while running in Atkinson cycle, and conventional power density when running as a normal-cycle engine.
We get the best of both worlds better fuel economy and fuel efficiency. And we get the torque we want when we need it.
Functionality
The Atkinson Cycle is the extended opening of the intake valve during the compression stroke. This is counter-intuitive. The Lower resistance due to the open intake valve. Also the compression ratio versus the volumetric displacement is the other part of the equation.
Video Time!!
The Atkinson Cycle
Wil Sanders